flask db compiler

# Initialize models and compile SQLAlchemy object list
app_models_file_path = self_path / pathlib.Path('%s/models.py' % app_name)
app_models_dir_path = self_path / pathlib.Path('%s/models' % app_name)
app_model_modules = []
if app_models_file_path.is_file():
    model_module = importlib.import_module('.%s.models' % app_name, 'apps')
    app_model_modules = [model_module]
elif app_models_dir_path.is_dir():
    app_model_modules = tools.general.get_modules_in_dir(str(app_models_dir_path))
for module in app_model_modules:
    if hasattr(module, 'db'):
        db_objs.append(module.db)